int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
unsigned int desc_count, unsigned int desc_size)
{
vnic_dev_desc_ring_size(ring, desc_count, desc_size);
ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev,
ring->size_unaligned,
&ring->base_addr_unaligned, GFP_KERNEL);
if (!ring->descs_unaligned) {
printk(KERN_ERR
"Failed to allocate ring (size=%d), aborting\n",
(int)ring->size);
return -ENOMEM;
}
ring->base_addr = ALIGN(ring->base_addr_unaligned,
ring->base_align);
ring->descs = (u8 *)ring->descs_unaligned +
(ring->base_addr - ring->base_addr_unaligned);
vnic_dev_clear_desc_ring(ring);
ring->desc_avail = ring->desc_count - 1;
return 0;
}
int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
unsigned int desc_count, unsigned int desc_size)
{
vnic_dev_desc_ring_size(ring, desc_count, desc_size);
ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
ring->size_unaligned,
&ring->base_addr_unaligned);
if (!ring->descs_unaligned) {
vdev_err(vdev, "Failed to allocate ring (size=%d), aborting\n",
(int)ring->size);
return -ENOMEM;
}
ring->base_addr = ALIGN(ring->base_addr_unaligned,
ring->base_align);
ring->descs = (u8 *)ring->descs_unaligned +
(ring->base_addr - ring->base_addr_unaligned);
vnic_dev_clear_desc_ring(ring);
ring->desc_avail = ring->desc_count - 1;
return 0;
}
int vnic_cq_mem_size(struct vnic_cq *cq, unsigned int desc_count,
unsigned int desc_size)
{
int mem_size;
mem_size = vnic_dev_desc_ring_size(&cq->ring, desc_count, desc_size);
return mem_size;
}
int vnic_rq_mem_size(struct vnic_rq *rq, unsigned int desc_count,
unsigned int desc_size)
{
int mem_size = 0;
mem_size += vnic_dev_desc_ring_size(&rq->ring, desc_count, desc_size);
mem_size += VNIC_RQ_BUF_BLKS_NEEDED(rq->ring.desc_count) *
VNIC_RQ_BUF_BLK_SZ(rq->ring.desc_count);
return mem_size;
}
